He has always been one of my cartooning heroes, though politically we're not on the same page.
One of the Aussie editorial cartoonists here in Queensland has a couple of Mac originals (he came over to London and toured the papers, speaking to editorialists). I'm dead jealous.
Oh, and Mac often used to put a cartoon of his whole wife (not just her head) in his work. It was always a good game spotting her, because she'd sometrimes be "hidden" - represented as the "photo" in a newspaper as it blew away down the street, for instance-, and other times she'd be a distinctive figure in a crowd.